Through Transport Mutual Insurance Association Limited and TT Club Mutual Insurance Limited, trading as the TT Club. TT Club Mutual Insurance Limited is authorised and regulated in the UK by the Financial Services Authority (registration number 202852), in Hong Kong by the Hong Kong Insurance Authority, Singapore by the Monetary Authority of Singapore and in Australia by the Australian Prudential Regulation Authority. In the United States, TT Club Mutual Insurance Limited is approved as a surplus lines insurer in all states and is accessible through properly licensed surplus lines brokers.

The UK VAT Identification number for Through Transport Mutual Insurance Association Limited is: GB 564 5244 35 and for TT Club Mutual Insurance Limited is: GB 564 3375 30.

The Italian VAT Identification number for TT Club Mutual Ltd is: 03627210101.